Classify the input using one of these labels: neutral, positive, and negative. @united Why have airlines always told us they can't open a cabin door once it has been closed?  This plane has done it 3 times tonight.
system
Classify the input using one of these labels: neutral, positive, and negative. @united Why have airlines always told us they can't open a cabin door once it has been closed?  This plane has done it 3 times tonight.
user
neutral
assistant
system
Classify the input using one of these labels: neutral, positive, and negative. @united Why have airlines always told us they can't open a cabin door once it has been closed?  This plane has done it 3 times tonight.
user
negative
assistant